Features: Effortlessly assemble a high capacity power banks with this not solder 5x21700 battery case, featuring plug and play connectors for safe, easy installation. Equipped with double USB ports and a digital LCD display, this modulars battery holder supports simultaneous device charging while monitoring real time power levels. Ideal for enthusiasts, outdoor adventurers, and hobbyists seeking a customizable, portable energy solution for extended trips or emergencies backup. Perfect for camping excursions, remote work setups, and daily commutes, providing charging for smartphones, tablets, and small electronics on the go. Crafted from impacts resistant ABS and precisions engineered PCB components, this removable 21700 battery enclosure ensures long lasting durability and easy cell replacement. Specifications: Component: ABS+PCB Color: Black/Green/White/Blue Size: Approx. 6.38x2.72x1.06inch(162x69x27mm) Weight: 89g Package Includes: 1x Battery Case note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.